add node dynamic on server side

[simbal]

hi all
I search all over the net to solve my problem.

i have a TreePanel and i Want to add/delete node on server side when the user click on add/delete button

today i do this in javascript by this code

    var AddFolderChild = function(e) {
    var node = <%= TreeTestPanel.ClientID %>.getSelectionModel().getSelectedNode(); 
        Ext.MessageBox.prompt('Add Folder', 'Please enter folder name:',Addnode);
        var parent = node.parentNode;
    }
        function Addnode(btn, text){
        var node = <%= TreeTestPanel.ClientID %>.getSelectionModel().getSelectedNode();
        var parent = node.parentNode;
           node.appendChild(new Ext.tree.TreeNode( {
           text:text,
           id:parent +'1',
           leaf:false
           }));

    };

Great thanks for any help

[simbal]

please any help any one